Actually im pretty good at matching texture I agree with the post above its great if you want to bring someone you know or some known actors into a story. Here is an example of Deanna Lund from land of the giants face genned. I still wond up replacing it with a close looking generic character since I prefer to work with native morphs plus the nice textures makeup that you can otherwise not apply.

http://www.flickr.com/photos/54921954@N03/5136168328/in/set-72157625060516637/#/photos/54921954@N03/5136168328/in/set-72157625060516637/lightbox/